My commute into and out of the city from my apartment just northwest of the city center is quick and easy.
This is, in part, because the city has taken measures to constantly preserve the efficiency of the bike path.
This is a shot of a bike track similar to the one on Norre Alle, the largest street on my commute.
It's a very typical intersection. The bike track is roughly 12' wide, nearly the same width as the pedestrian crosswalk, and the bike track is separated from the very busy 4 lane roadway by a raised curb. At each intersection, the bike path levels out to the same grade as the road but retains its bike specific designation through a swath of blue paint.
There is quite a bit of construction happening on Norre Alle at the moment. I'm guessing they're doing some plumbing or electrical work as the city has dug out the underside of the street. That means they have to dig out the earth underneath the bike lane, but luckily, they have this handy machine to make it all right again:
They also have this handy machine to keep it tidy once construction is complete.
It would be understandable if the bike lane was shut down whilst construction happened. But that is just not the way they roll here in Copenhagen.
They create the bike track regardless. Custom built street sweepers, pavement rollers designed to smooth out bike paths and the vigilant maintenance of the bike facilities--even through construction--all serve to sustain this vibrant population of bicyclists.